f6a4217a88
Migrated existing driver samples to use the new code-sample directive and role. Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
48 lines
1.6 KiB
ReStructuredText
48 lines
1.6 KiB
ReStructuredText
.. zephyr:code-sample:: lp50xx
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:name: LP50XX RGB LED
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:relevant-api: led_interface
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Control up to 12 RGB LEDs connected to an LP50xx driver chip.
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Overview
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********
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This sample controls up to 12 LEDs connected to a LP50xx driver.
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First, for each LED information is retrieved using the led_get_info syscall
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and printed in the log messages. Next, from an infinite loop, a test pattern
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(described below) is applied to all the LEDs simultaneously (using the
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:c:func:`led_write_channels` syscall) and then to each LED one by one (using the
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:c:func:`led_set_brightness` and :c:func:`led_set_color` syscalls).
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Test pattern
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============
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For all the LEDs first (using channel API) and then for each LED one by one:
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For each color in red green blue white yellow purple cyan orange:
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- set the color
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- turn on
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- turn off
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- set the brightness gradually to the maximum level
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- turn off
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Building and Running
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********************
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This sample can be built and executed on boards with an I2C LP5009, LP5012,
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LP5018, LP5024, LP5030 or LP5036 LED driver connected. A node matching the
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the device type binding should be defined in the board DTS files.
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As an example this sample provides a DTS overlay for the :ref:`lpcxpresso11u68`
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board (:file:`boards/lpcxpresso11u68.overlay`). It assumes that a I2C LP5030
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LED driver (with 10 LEDs wired) is connected to the I2C0 bus at address 0x30.
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References
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**********
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- LP5009/LP5012: https://www.ti.com/lit/ds/symlink/lp5012.pdf
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- LP5018/LP5024: https://www.ti.com/lit/ds/symlink/lp5024.pdf
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- LP5030/LP5036: https://www.ti.com/lit/ds/symlink/lp5036.pdf
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